Boiler



2 Sheets-Sheet 1.. J. R, LUTGEN.

BOILER.

No. 479,288. Patented July 19, 1892.

(No Model.) 2 SheetsSheet 2.

J. R. LUTGEN.

BOILER.

No. 479,288. Patented July 19, 1892.

- WITNESSES:

A TTOHN E Y S.

UNITED STATES PATENT OFFICE.

JAMES R. LUTGEN, OF WINLOGIQASSIGN OR OF ONE-HALF TO CHARLES A. STURM, OF CASTLE ROCK, WASHINGTON.

BOILER.

SPECIFICATION forming part of Letters Patent No. 479,288, dated July 19, 1892.

Application filed February 9, 1892. Serial No. 420,897. (No model.)

To all whom it may concern:

Be it known that-I, JAMES R. LUTGEN, of

' lVinlock, in the county of Lewis and State of simple and durable in oonstruction,not liable to get out of order, and arranged to quickly itnd1 safely generate steam without waste of The invention consists of certain combinations of the parts, as will be hereinafter described, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a partof this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a front elevation of the improvement. Fig. 2 is a sectional front view of the same on the line 2 2 of Fig.4. Fig.3 isa sectional plan View of the same on the line 3 3 of Fig. 2. Fig. 4 is a similar view of the same on the line 4 4 of Fig. 2. Fig. 5 is a like view of the same on the line 5 5 of Fig. 2, and Fig. 6 is a plan 'view of the base with the grate in place.

The improved boiler is provided with a circular base A, having a bottom 13, forming an ash-pit 0, access to which is had by means of a door D, arranged on one side of the base A. The latter is formed with an outwardly-extending curved flange E, forming a trough to catch any dripping water, oil, &c., from the upper parts of the boiler.

On the top of the base A is set a ring F, fastened by bolts G to the bottom B, and on the outside of this ring F is riveted or otherwise fastened the exterior circular shell H, provided at its upper end with a cone-shaped cap H, supporting the smoke-stack I. On the lower part of the exterior shell H, directly above the ash-pit door D, is arranged a door J, through which the fuel is introduced into the fire-box of the boiler. The ring F supports a circular grate K of any approved construction,

and on the upper surface of the ring are formed lugs F, supporting the circular pipe L, connected by a series of vertically-arranged pipes N with a second circular pipe 0, formed with a concentric pipe 0', connected with the outer pipe 0 by radially-extending pipearms 0 as plainly shown in Fig. 5. The space between the grate K and the pipes O, O, and 0 forms the fire-box, into which leads the door J. A sufficient number of pipes N are omitted to allow space for the casing of the door J, as plainly shown in the said Fig. 5.

From the pipes O, O, and O extend upwardly the pipes P, supporting at their upper ends and connected with the pipes Q, Q, and Q of which the pipe Q is circular. The pipe Q, concentric to the same, and the pipes Q are in the shape of radial arms, as plainly shown in Fig. 4. The concentric pipe Q is formed with a diametrically-arranged pipe Q from the center of which extends a short branch pipe R. connecting with a sphericalshaped steam-dome S, located in the cap H of the exterior shell H. A steam-pipe T leads from the top of the dome S to carry the generated steam to the machine to be driven. The steam-dome S also carries a gage U of any approved construction for indicating the pressure of the steam within the said dome. A water-gage V is connected with one of the vertical pipes P to indicate the level of the water within the said pipes.

It will be seen by reference to the drawings that the pipes P, connecting the circular pipes O and Q, with each other, are really continuations of the pipes N, extending between the circular pipes O and L. The other pipes P, connecting the concentric circular pipes O and Q and the arms 0 and Q with each other, do not extend between the circular pipes O and L, so that the fire-box is unobstructed and sufficient space is given for burning the fuel on the grate K.

In order to have ready access to the several vertical pipes, plugs \V are screwed in the top of the pipes Q, Q, and Q opposite the entrance of the pipes P, and similar plugs WV also screw in the under side of the circular pipe L, opposite the entrance of the pipes T. Thus by removing the several plugs W the various vertical pipes P and N can be readily cleaned whenever necessary. Hand-holes W are arranged in the circular pipes O and L and corresponding doors W are formed in the shell H to conveniently clean said pipes.

It is understood that the circular pipes L and O, the concentric pipes 0', the arms 0 the vertical pipes N, and part of the vertical pipes P are filled with water, while the top pipes Q, Q, and Q and the upper part of the vertical pipes P fill with steam generated from the water in the pipes mentioned, the steam finally passing from the concentric pipe Q to the arm Q and from the latter to the branch pipe R to the steam-dome S. The level of the Water in the vertical pipes P is always indicated on the gage V.

It will be seen that the fuel burning on the grate K heats the water in the circular pipes L, O, and O, aswell as in the lower pipes N and the branch pipes 0 and then the heat in rising from the fire-box above the circular pipes O and 0' passes among the large number of pipes P, thus heating the water therein. It will thus be seen that the lower pipes O, N, and L are subjected to the greatest heat emamating from the burning of the fuel on the grate K, so that the water in these pipes will be heated to a higher degree, and will consequently readily circulate in the entire system of pipes except the top pipes.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a boiler, a sectional water-pipe comprising a circular base-pipe, vertical pipes extending from the said base-pipe, a second circular pipe arranged above the base-pipe and connected with the said vertical pipes, and a concentric circular pipe arranged within the said second circular pipe, and a series of hollow radial arms which connect with two circular pipes, substantially as shown and described.

2. Ina boiler, a sectional water-pipe comprising a circular base-pipe, concentric pipes arranged above the said base-pipe and connected with each other, upright pipes set in the said concentric pipes, top concentric pipes connected with the said upright pipes, and short vertical pipes connecting the said basepipe with the first set of concentric pipes, substantially as shown and described.

JAMES R. LUTGEN.

Witnesses:

J R. BUXTON, W. H. KENOYER. 

